Bur-sterilizer.



E. L. MONNOT.

BUR STERILIZER.

APPLICATION FILED mac. if). 1914.

' Patented June 13, 1916 TEE EDWARD L. MONNOT, or CANTON, OHIO.

BUR-STERILIZER.

Specification of Letters Patent.

Application filed December 15, 1914. Serial I10. 877,388.

To all whom it may concern:

Be it known that I, EDWARD L. MONNOT, a resident of Canton, in thecounty of Stark and State of Ohio, have invented a new and usefulImprovement in Bur-Sterilizers, of which the following is aspecification.

This invention relates to bur sterilizers.

The object of the invention is to provide a simple, inexpensive andsanitary device for holding and sterilizing dentists burs or similarimplements, and which enables the burs to be immersed in a sterilizingsolution and to be held out of the solution whenever desired.

A further object of the invention is to provide a device of thischaracter which can be made at low cost, which is readily cleaned, whichenables the burs to be easily inspected and withdrawn for use, and whichcompletely incloses and protects the burs from contamination.

The invention comprises the bur sterilizer hereinafter described andclaimed.

In the drawings, which represent several embodiments of the invention,Figure 1 is a sectional elevation through one form of the device, andshowing the bur carrier in the position where the burs are immersed inthe sterilizing liquid; Fig. 2 is a similar view, the cover beingomitted, and showing the bur carrier in the position where the burs arewithdrawn from the sterilizing solution; Fig. 3 is a cross section onthe line 33, Fig. 1; Fig. 4 is a plan view with the parts in the sameposition shown in Fig. 2; Figs. 5 and 6 are views corresponding to Figs1 and 4 and showing a modification; and Fig. 7 is a plan view showingstill another modification.

The sterilizer shown in the drawings comprises three parts, a receptacle1 for containing the sterilizing solution in which the burs areimmersed, a bur carrier 2, which fits within the receptacle 1, and acover 3 for the receptacle 1. All of these parts may be made of anysuitable material, but preferably of some material which is not corrodedor afiected by the sterilizing solution and which will not rust due tomoisture. One suitable material is porcelain or other vitrified ware,such as glass.

The receptacle 1 has a flat base 4, and a peripheral wall or rim 5 whichforms a chamber 6 for containing the sterilizing solution and the burcarrier, said chamber being considerably deeper than the body of thecarrier. The upper edge of the wall or rim 5 of the receptacle issuitably formed, as by providing a peripheral groove or channel 7therein, to receive the cover 3, said cover bemg provided with asuitable knob or handle 8.

The bur carrier consists of a body portion which fits loosely in thechamber 6 of the receptacle, and which body is provided with a pluralityof closely spaced small holes or openings 9 to receive the burs or otherimple'inents, the bottoms of said openings being closed to prevent theburs from dropping out. The peripheral portion of the body extends aboveits upper surface so as to form a concavity or depression 10 for thesterilizing fluid when the bur carrier is in its lowest position shownin Fig. 1, so that said solution will completely cover the burs. Thebody is also provided with one or more vertically" e'Xtendingthroughholes or openings 11, four being shown, through which the sterilizingsolution drains away from the concavlty 10 when the bur carrier islifted. The carrier is also provided with a suitable handle 12 securedthereto in any suitable Patented June 13, 1916.-

manner, as by'a clamping screw 13, and

which extends above the upper surface of the carrier and stops short ofthe cover 3. This construction enables the entire carrier and the burstherein to be lifted out and plunged into boiling water or other liquidwhenever desired. 3

The bur carrier and the inner wall surface of the receptacle areprovided with suitable cooperating shoulders which may be brought intoregistering position by proper relative rotative adjustment of thecarrier and receptacle about a vertical axis, and in which registeringposition the shoulders on the receptacle lie beneath the shoulders onthe bur carrier and support said carrier above the solution in thereceptacle, so that the burs therein may be conveniently selected orreplaced. Also, one of said members, to wit, either the bur carrier orreceptacle, is provided between each two adjacent shoulders thereon witha recess or open space to receive a shoulder on the other member whenrotatably adjusted to registering relation therewith, whereby the burcarrier may be lowered in the receptacle to immerse the carrier and theburs therein in the sterilizing solution. Various arrangements aresuitable for this purpose, several satisfactory constructions beingshown in the drawings.

In the form shown in Figs. 1 to 4 the inner surface of the receptacle 1is provided with a plurality of vertically extending ribs 15, threebeing shown, which extend from the bottom of the receptacle to a pointshort of the top thereof and are shown as being about one-third theheight of the receptacle. The upper ends of the ribs form shoulders 15for cooperation with shoulders on the bur carrier, but the ribs might beconsiderably shorter than as shown, as simple knobs on protuberanceswill provide satisfactory shoulders for this purpose. The shoulders 30on the bur carrier are spaced around its circumference at intervalscorresponding with the intervals between shoulders 15 and are formed bythe peripheral portions of the bottom surface of said carrier. Betweeneach two adjacent shoulders 30 the bur carrier is provided with a recessor open space 16, which are illustrated as vertically extending grooves,said recesses being of any suitable size or shape but at least ofsufficient depth and width to receive one of the protuberances or ribs15 when in registering relation therewith.

In use of the device a suitable quantity of liquid sterilizing material,such as lysol or the like, is poured into the receptacle. The burs areplaced in the cavities or pockets of the carrier 2 and the latter isplaced in the receptacle in such position that the recesses 16 registerwith the shoulders 15 so that it can be lowered to the position shown inFig. 1, in which the burs are wholly immersed in the sterilizingsolution. By placing the cover upon the receptacle the burs arecompletely inclosed and there is no danger of dust, dirt or germsentering the receptacle. W hen a bur is required for use the cover 3 isremoved and the bur carrier 2 is lifted by its handle 12 until its lowersurface is above the shoulders 15 at the upper ends of the ribs 15 inwhich position said carrier is rotated slightly until the shoulders 15and 30 register with each other, as shown in Fig. 4, when the carrierrests upon and is supported by the receptacle shoulders. In thisposition the liquid sterilizing solution drains away from the cavity 10in the upper part of the carrier through holes 11 and into the bottom ofthe receptacle. The burs are now exposed near the top of the receptacleand can be readily inspected for the selection of the proper one.

Figs. 5, 6 and 7 illustrate modified ar rangements of the shoulders andrecesses in the bur carrier and the lower portion of the receptacle. InFigs. 5 and 6 the lower portion of the wall of the receptacle is thickerthan its upper portion to provide a horizontal circumferentiallyextending shoulder 20 which is cut away at several points to providevertically extending recesses or channels 21. The bur carrier issubstantially cylindrical and is provided with projections 22 the lowerends of which form shoulders for cooperation with the shoulders 20 onthe receptacle. In one position these projections register with therecesses in the receptacle and permit the carrier to be lowered, whilein another position, I

shown in dotted lines Fig. 6, the projections register with theshoulders 20 and the carrier is held elevated and rests on the saidshoulders 20. r

In Fig. 7 the bur carrier is non-circular in cross section, being shownas hexagonal. The lower portion of the receptacle wall is thickened toprovide inner wall portions 25, the cross section of the receptaclethrough these thickened wall portions being hexagonal. The bur carriercan be dropped into the hexagonal portion at the bottom of thereceptacle for sterilizing the burs and by lifting and turning it theangular or shouldered portions of the carrier rest upon the shoulders ofthe thickened wall portions of the receptacle.

The device is very simple and can be made at low cost. It is cleanly,sanitary and can be readily washed or cleaned. It also enables the bursto be fully and completely sterilized and exposed for inspectionwhenever desired.

What I claim i's:

1. A bur sterilizer, comprising a receptacle for the sterilizingsolution, and a bur carrier therein, said members being provided withcooperating shoulders, the receptacle shoulders lying underneath theshoulders on the bur carrier in one of its positions and supporting saidcarrier above the solution in said receptacle, and one of said membersbetween pairs of adjacent shoulders thereon being provided with recessesto receive the shoulders of the other member when said two members arerelatively ro tated to a new position and thereby allowing the burcarrier to be lowered in the receptacle and immersed in said solution.

2. A bur sterilizer, comprising a receptacle for the sterilizingsolution, and a bur carrier therein, the inner wall surface of thereceptacle above its bottom being provided with circumferentially spacedupwardly facing shoulders, and the bur carrier being provided withcircumferentially spaced downwardly facing shoulders, said bur carrierbeing freely rotatable in said receptacle when its shoulders are abovesaid receptacle shoulders, said receptacle shoulders lying underneaththe shoulders of the bur carrier in one of its positions and supportingthe same above the solution in said receptacle, and said bur carrierbetween each pair of adjacent shoulders thereon being provided with avertically extending recess to receive one of the shoulders of thereceptacle when said receptacle and carrier are relatively rotated to anew position and thereby allowing the bur carrier to be lowered in thereceptacle and immersed in the solution.

lizing solution, and said carrier body being provided withcircumferentially spaced upwardly extending recesses to receive the ribson said receptacle when said carrier and receptacle are relativelyrotated to a new position and thereby allowing the bur carrier to belowered in the receptacle and immersed in the solution. 1

In testimony whereof, I have hereunto set my hand.

EDWARD L. MONNOT. Witnesses:

MARSH Bownns, ALBERT M. PRICE.

Copies 01 this patent may be obtained for five cents each, by addressingthe Commissioner of 2mm, Washington, D. G."

